<template>
  <div id="app">
    <div class="container">
      <!-- 顶部框模块 -->
      <div class="form-group">
        <div class="input-group">
          <h4>品牌管理</h4>
        </div>
      </div>

      <!-- 数据表格 -->
      <table class="table table-bordered table-hover mt-2">
        <thead>
          <tr>
            <th>编号</th>
            <th>资产名称</th>
            <th>价格</th>
            <th>创建时间</th>
            <th>操作</th>
          </tr>
        </thead>
        <tbody>
          <tr v-for="item in list" :key="item.id">
            <td>{{ item.id }}</td>
            <td v-html="item.name"></td>

            <!-- 如果价格超过100，就有red这个类 -->
            <!-- :class="{类名: 布尔值}" -->
            <td :class="{ red: item.price > 100 }">{{ item.price }}</td>
            <td>{{ item.time }}</td>
            <!-- del(item.id) 将当前触发事件的元素 id 传递给事件处理函数 -->
            <td><a @click="del(item.id)" href="#">删除</a></td>
          </tr>
        </tbody>
        
        <tfoot v-if="list.length === 0">
          <tr>
            <td colspan="5" style="text-align: center">暂无数据</td>
          </tr>
        </tfoot>
           
      </table>

      <!-- 添加资产 -->
      <form class="form-inline">
        <div class="form-group">
          <div class="input-group">
            <input v-model="name" type="text" class="form-control" placeholder="资产名称" />
          </div>
        </div>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <div class="form-group">
          <div class="input-group">
            <input v-model.number="price" type="text" class="form-control" placeholder="价格" />
          </div>
        </div>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <!-- 阻止表单提交 -->
        <button @click.prevent="add" class="btn btn-primary">添加资产</button>
      </form>
    </div>
  </div>
</template>

<script>
export default {
  name: "VuBaseApp",

  data() {
    return {
      name: "",
      price: 0,
      list: [
        { id: 100, name: "外套", price: 199, time: new Date("2010-08-12") },
        { id: 101, name: "裤子", price: 34, time: new Date("2013-09-01") },
        { id: 102, name: "鞋", price: 25.4, time: new Date("2018-11-22") },
        { id: 103, name: "头发", price: 19900, time: new Date("2020-12-12") },
      ],
    };
  },
  methods:{
      add(){
          if(this.price===0||this.name.trim().length===0) return alert('名称不能为空或价格不能为0!')
          let id=this.list.length>0?this.list[this.list.length-1].id+1:100
          this.list.push({
              id,
              name:this.name,
              price:this.price,
              time:new Date()
          })
          this.name=''
          this.price=0
      },
      del(id){
          console.log('我被点了, 要删除id为:',id);
          let index=this.list.findIndex(item=>item.id==id)
          this.list.splice(index,1)
      }
  },
};
</script>

<style >
.red {
  color: red;
}
</style>